Bug#940994: lintian: changelog-file-missing-explicit-entry false positive for versions like flatpak_1.2.5-0+deb10u1

[Simon McVittie <smcv@debian.org>]

Package: lintian
Version: 2.22.0
Severity: normal

I'm currently preparing an upload of a new upstream stable-branch version
of flatpak for buster (see #940818). It is a new upstream version released
directly to the buster branch, not a backport or update of a pre-existing
package with the same upstream version number (bullseye/unstable already
have a newer upstream branch for flatpak).

My understanding is that the conventional version number for such
things looks like 1.2.5-0+deb10u1, analogous to the convention of using
versions like foo_7.8.9-0.1 to NMU new upstream versions. The release
team seems to agree that this is correct versioning: for example see
dbus in (old)oldstable.

lintian currently emits:

    changelog-file-missing-explicit-entry 1.2.4-1 -> 1.2.5-0 (missing) -> 1.2.5-0+deb10u1

To accommodate the 0+deb10u1 convention, I think there should be an
exception to this tag, preventing it from being emitted for revision
numbers that "are based on" revision 0.

Thanks,
    smcv

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-debug'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental-debug'), (1, 'buildd-experimental'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.2.0-2-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages lintian depends on:
ii  binutils                     2.32.51.20190909-1
ii  bzip2                        1.0.8-2
ii  diffstat                     1.62-1+b1
ii  dpkg                         1.19.7
ii  dpkg-dev                     1.19.7
ii  file                         1:5.37-5
ii  gettext                      0.19.8.1-9
ii  gpg                          2.2.17-3
ii  intltool-debian              0.35.0+20060710.5
ii  libapt-pkg-perl              0.1.36+b1
ii  libarchive-zip-perl          1.66-1
ii  libcapture-tiny-perl         0.48-1
ii  libcgi-pm-perl               4.44-1
ii  libclass-accessor-perl       0.51-1
ii  libclone-perl                0.41-1+b1
ii  libdpkg-perl                 1.19.7
ii  libemail-valid-perl          1.202-1
ii  libfile-basedir-perl         0.08-1
ii  libfile-find-rule-perl       0.34-1
ii  libio-async-loop-epoll-perl  0.20-1
ii  libio-async-perl             0.74-1
ii  libipc-run-perl              20180523.0-1
ii  liblist-compare-perl         0.53-1
ii  liblist-moreutils-perl       0.416-1+b4
ii  libmoo-perl                  2.003004-2
ii  libpath-tiny-perl            0.108-1
ii  libtext-levenshtein-perl     0.13-1
ii  libtimedate-perl             2.3000-2
ii  libtry-tiny-perl             0.30-1
ii  libtype-tiny-perl            1.004004-1
ii  liburi-perl                  1.76-1
ii  libxml-simple-perl           2.25-1
ii  libyaml-libyaml-perl         0.80+repack-2
ii  man-db                       2.8.7-3
ii  patchutils                   0.3.4-2+b1
ii  perl [libdigest-sha-perl]    5.28.1-6
ii  t1utils                      1.41-3
ii  xz-utils                     5.2.4-1+b1

Versions of packages lintian recommends:
ii  libperlio-gzip-perl  0.19-1+b5

Versions of packages lintian suggests:
ii  binutils-multiarch     2.32.51.20190909-1
ii  libhtml-parser-perl    3.72-3+b3
ii  libtext-template-perl  1.55-1

-- no debconf information